message old version
I'm using a 2017 MacBook Pro running OS 10.13.1 with Firefox Quantum 57.0. Most websites give me an error message that I'm running an old version of Firefox. Sites like Facebook & Twitter will only load partial versions without all features, other sites won't load at all.
Wšykne wótegrona (1)
hi, your useragent (the information the browser sends to websites to identify its version) - apparently mistakenly - shows you're on firefox version 3.5. probably some sort of toolbar or adware has overwritten it. please see here in order to reset the user-agent settings in firefox and fix this problem: How to reset the default user agent on Firefox